The European Commission, DG XII, has published a catalogue of contracts carried out during 1991-1994 for the environment research programme. The contracts relate to projects concerned with global changes in atmospheric, chemistry and biochemical cycles and their consequences for life on earth, as well as technological risks. In particular, the catalogue contains details on contracts in the following two areas: - Participation in global change programmes: . Stratospheric chemistry and ozone depletion; . Effects of UV exposure on human health and on the environment; . Tropospheric physics and chemistry; . Biogeochemical cycles and ecosystem dynamics; - Technological and natural risks: . Risks from agricultural technologies and land-use practices; . Regional aspects of ecosystems protection; . Environment and human health; . Risks to health and the environment from chemical substances. The catalogue presents the objectives and a brief description of each research project, as well as contact details for the project coordinator and partners. It also contains an index of participants and contract numbers.